What is the most likely diagnosis?
- 43 year-old in motor vehicle accident 2 months earlier
Close-up of lateral radiograph of chest
- Metastatic Lung Carcinoma
- Congenital Absence of the Pericardium
- Aortic Dissection
- Sternoclavicular Dislocation
- Sternomanubrial Dislocation
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Additional Images
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Answer:
5. Sternomanubrial Dislocation
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Sternomanubrial Dislocation
General Considerations
- Rare
- Usually occurs with high energy impact, such as motor vehicle accidents
- Can occur with lower impact forces if there is a pre-existing arthropathy, e.g. rheumatoid arthritis or severe kyphosis
- Joint may be synovial (dislocation most common), synchondral, or synosteal (latter two typically fracture through manubrium without dislocation)